Cutting-chain for mining-machines.



E. C. MORGAN. CUTTING CHAIN Foa NNNING MACHINES. APPLICATION FILED SEPT.5. 1914.

Y 'To all whom t 'may Concern EDMUND C. MORGAN, F CHICAGO, ILLINOIS. i

CUTTING-CHAIN AFOR.

Specification of Letterslatent.

Minimo-MACHINES.

Alipncationnied'september 5, 1914. serial No. 860,371.

Beit knownl that I, EDMUND C. MORGAN, a citizen of the United States,andresident of Chicago, in the county ofV Cook and State of Illinois,have invented certain new-and useful Improvements in Cutting-Chains forMinii'ig-Machines, of which the following Ais a specification.

My invention relates to improvements in cutting chains and has moreparticular reference to improvements in cutting chains of the type usedin `mining machines.I One of the objectsof my invention isto provide animproved device of this oharacterwhich will be simple, durable andreliablein con struction, and effective and efficient 1n 'op-V oration.Other objects of my invention will appear hereinafter.

Referring to' the accompanying drawings: Figure 'l is side elevationofa" portion ofa cutting chain embodyingmy invention. A

Fig. is a longitudinal section on theline Q-2 of Fig. l. g A Fig. 3 is atransverse section on the line 3 3 of Fig. l. Y Fig. l is a. sectionalview similar toFig. 3 illustrating a. 'modified' form'v of my invention.i Y Fig. 5 is a sectional view illustrating'still another modification,and Y Fig. 6 is a sectional view illustrating still anothermodification. Y i

It is desirable in mining 'machines to use chains having a pluralityofc'uttingbits or parts carried thereby so that as the chain travels thebits progressively cut into the mine wall. rlhe bits however are likelyto-V become damaged or broken or become dull from use, and it isdesirablettherefore that the `bits be quickly andl conveniently removlable and replaceable.V Inthe drawings -I- have shown severalstructureswhicliembody my invention and which provide for-the con-1 venientremoval ofV cuttingbits. i In the construction shofwnfthe chain isvofthe side cut# ting type, that'is to say.v the cuttingV bits pro-1 Y jectlaterallyk at intervals .from theside` of 1 the chain and inoperationthefchain enters the wallof the mine in a directionvtransversey to the line oftravel of the vchain itself@ This' chain ismade upof plurality ofspaced':V

side links of each pair, as clearly shown in the sectional View of Fig.2. The links are fastened together by means of bearing bolts 3 passed-through suitable holes in the intermediate and side links to makeup acompletevch'ain. These bolts are threaded at one end and are providedwith nuts 4- thereon for the purpose of holding them in position. l Attheir other ends the bolts are slightly enlarged as at 3a and a portionof this enlargement is flattened as at 3b and engages lugs 3 on the sidelinks to prevent the rotation of the bolts with respect to the links.Interposed between the nuts and the side links of the chain are washers5, preferably of the-locking type although they may be of any suitableconstruction for the purpose. The intermediate'links inthe presentconstruction have lateral extensions 6 atY one side projectingpreferably to a point sub-l stantially iush with then-ut ends of thebolts. These extensions 6 together With theY main portions of theintermediate links 2` are providedy with holes orV openings, preferablyextending entirely therethrough, to'provid sockets for holding theShanks of the cutting bits. The Shanks 7 of the cutting bits arepreferably of rectangular section so as to prevent the rotation of thebits, and the sockets or openings in the intermediate links arepreferablyV of corresponding 'sectional transverse cutting edges 9. Theknifeporrtionsv 8 of thecutting bits are inclinedV at, an angle to thevlongitudinal axes ofVv rtheir shanks and these cutting portions 8" arege'nV erally positioned in the chainl so thatthey point vin thedirection in which the rchain Vt-ravels.- The sockets kin theintermediate links are-also inclined or angularly disposed so;V thatthey hold the bits in position to cut a kerf which is wider thanthethickness of the chain, thereby readily admitting the chain into thekerf. Alternatebits are preferably-staggered or linclined inopp'osite'di rection's as shown clearly in Fig.v 3 so as to secure theproper vwidth of kerf. In the I, construction. shown, I v'providefasteningmeans which vremovably Vhold these bitsr in place. Infnthestructure shown in Figs. land 8 the :fastening means is in the formof'a'v wedgey shaped orjtap'ered member 10 Whichs;ins'erted in afsocket11 alongside the bitI Y Patented' Dee. 16,1919.

ioo

@ne `oflthe walls 12 of the socket isrtapered Y corresponding to thetaper of the wedge member and it will be observed that the socket 11 andthe wedge shapedl member converge in the direction of removal of thebit. In order to maintain vthel wedge member tightly in clampingposition against thel shankof the bit, I provide means which has atendency to constantly draw or vpull the wedge member toward theconverged or smaller fend of its socket 11.V -This means, in Figs. 1, 2,and 3, consists of an elastic or spring member13- One end of the springmembe'lis fastened to the end of the extension ofthe intermediate linkby means of a bolt and nut14. VThe'other end of the spring is bentaround a smallheaded projection 15 on the end of the vwedge member 10.This spring exerts'a force upon the wedge member 10 tending to pull itout of its socket; consequently it' holds the bit firmly in place. Itwillbe noted that during the operation of the chain ,any force whichtends to pull the bit out of its socketacts upon the Wedge in suchamanner as to cause it' to increase its clamping effect upon the bit.Hence the greaterthe force tending the pull the bit out, Vthe greaterclamping. effect the Wedge will have upon the bit. In Fig. -2 I havein-l dicated .i means by which vthe bit may be quickly andconvenientlyreleased. A tool A, `such as indicated in. dotted lines inFig. 2, has a heel A1 arranged-to press upon the outer end ofi-thewedging member 10. This tool may havea long handle .for operating it andin order to give the properrleverage itV Y ,count I provide theY bearingbolts V3 with is provided with a hooked portion A2. i This hoo-k isintended to engage a loop member l'carried by the chain adjacent eachbit. In

the construction shown this loop maybe Vin the form of a piece of rodbent in the form ofa loop and having a portion 17 positioned.

between the nut 4: and one of the side links y in the `place of thewasher 5 for clamping the loop in position. To release the bit it isthus simply necessary to hook the portion A2 of the tool intov the loop4and operate the handle portion s0 vas to press upon the end of thewedgeor clamping member 10. The clamping.memberv 10 can'thus'be held ina nonyclamping position until abitV has been removed and'another oneinserted. The ends ofthe spring 13 can also be fastenedV in such f amanner asto prevent the loss ofthe wedge ing.v member-jin case there'isno bitV in lits socket.l In Figs. 1,2,"and 3, it will benoted thatthelongitudinal axis 'of the socket 11 is inclined in the Qsamedirection asthe longitudinal axis 'of the socket for holding the bit.

. InFigA- this is slightly modified in that the longitudinal laxis ofthesocket 11 landthe f ivedging-ncemberl()V is at 'right angles to theline-of'travel `of the chain itself 'so that each` clamping memberV 10occupiesa position at.'

' an angle. with1`respect" .totheVv shankv of the( bit. .'Furthermorethis'clamping member isv kthe longitudinal axis of the socketl is in-Aclined or positioned atan angle to the axis of the bit shank the degreebeing such as to press the flat face 10 of the flattened mem# beragainstthe bit. .This member, ,like in the construction in Figs. 1 and3, is 4also i" Y forced outwardly in the direction of removal of theb-it but in this case a Vcompression spring 21 is positioned betweentheV Yinner end of the clamping member 10 and the bottom of its socket.The ends kof the'spring may be attached to the end of the socket and toend of the member 10 respectivelyby` means of pinsl 22 or otherwise soas to prevent the loss of the member 10 in case there is no bit inposition. The chain, in orderl to hold it substantially'rigid while itiscutting along its proper lines, is adapted to be supported by a frame orguiding member.

In'this constructionv this frame 25 as .shown in Figs. 1 to 5 has aflange or extension 264 on one side forming, in a sense, a runway inwhich the chain may travel.'` This Vhowever does not preventthe chainfrom becoming separated from the frame and lon this ac-v heads 27preferably circular in form.` The edge of the frame 25 is'prov'ided witha continuous channel or groove in which these heads may travel. One`sideo'futhe undercut groove may be formed in the 'frame itself and theother side formed by Va iianged strip or plate 28 securedgtothe` framebymeansI ico of the bolts 30 or otherwise." This construction is clearlyshownin Fig. 3 andl operates t0 prevent the relative displacement VoftheV chain and frame while it is operating. In Fig. 6 the constructionis slightly modifiedV in that thebolt has an offset portion 31 ateneVendv andv this-oii'set portioncarriesa lateral extension or head 32which engages the` ange 33 on the holding plate 28. The side .linklfmayhave a 'correspondingly Yshaped f gsocket 34 to hold the offset portion31 of the bolt and in' this'manner the bolt maybe positively lockedagainst rotation on its own axis while the chain is traveling..

`The speciiic 'formof guiding'mechanism herein described and sho-wn inthe vdrawings, is'coveredby claims yin' my copending application Ser.`No. 848,726, filed July' 3v,

iic

1914, forf'anv improvement cutter chains forV miningv machines. YObviouslythose skilled in 'the art -Inay make Vvarious "changes Y in theVdetails and isc i arrangement of the parts without departing from thespirit and scope of my invention as dei-ined by the claims heretoappended, and I wish therefore not to be restricted to the preciseconstruction herein disclosed.

I claim:

l. In a chain cutter for miningl machines, the combination with aplurality of links and transverse pivotal connections between saidlinks, oi' guiding mechanismen one side of the chain at the inner endsof suoli pivof tal connections, a plurality oi' cutting 'tools removablymounted in some of said links and extending into lthe same substantiallyparallel with said pivotal connections and projecting from suoli linksinto cutting position on that side of the chain opposite the guidingmechanism, and means extending longitudinally of each of said cuttingtools 'for holding the saine in cutting position during the travelthereof parallel to the plane of drive and spaced therefrom.

2. rIn a chain cutter for mining machines, the combination with a liiikhaving a socket therein, of spaced-apart pivot pins for pivotallyconnecting said linkV to the next adjacent links, said pivot pinsextending in the direction of feed of the chain cutter and said socketbeing substantially parallel to f said pivot pins, mechanism extendingsubstantially parallel to said pivot pins and located between the samein said socket to hold said cutting tool tor travel parallel to theplane ot drive and spaced tliereiroim after said tool has been insertedin said socket.

Y 3. A chain cutter for mining machines comprising a link having atransverse socket with straight walls where engaged by the j toolshanks, a cutting tool having a shank adapted to be Vinserted into saidsocket .and

engage such straight walls, Va fastening wedge in said link in positionto engage the back'of the tool shank relative to the direction; ofcutting travel of the tool, means vieldingly urging saidy fasteningwedge in a. i

direction approximately longitudinalof said socket and against saidshank when'inserted.

Y in said socket topermit free vinsertion .of-

said shank and lock it automatically against withdrawal whether fully orpartially inserted` in said socket, said shank lia'v'ing'iiat Yso' planefaces for engaging the wallsof Vsaid 'socket Vat various Vdepths'relative to saidlii'ik, andgan extension progecting from said wedge Vinposition to ,receive Va:'hammer*blow' to i quickly release saidwedge-'and permit quick Y withdrawal' ci saidtool.

, 4i.y In a chain cutter for miningfma'chines, the combination'with:'a1chain coi'nprising,

side links and intermediate links; said` side links being inspaced-apart parallel planes parallel to the plane of drive', said"`intermediate links having sockets therein@ extending transversely ofsuchY plane of drive; cuttingv bits inserted in said socketsimposition:l for a cutting path of travelf parallelav toi-the*y plane ofdrive and spaced therefrom, sardil bits/being removable from the outeredge ofsaid intermediate links, wedging memberseat^r tending"transversely of said links backof the cutting bits` relatively to theircutting path of travel and in position to permitfzree and quickinsertion *ofV said: bitsy in saidsockets, resilient means for forcing;said' members in wedging positionsv alongy said bits to lock saidV bits`against removal from said sockets, and projections from' said wedgingmembersin position@to=receivefham nier blows against the a'ctionof saidlresilient means to release saidV wedging: members quickly and' alsorelease saidbits` for quick Withdrawal from their' socketsiv 5. In achain cutterv for iniiiingxmachines, the combination-with a chain`having a piemel of drive transverse tol a'y planey extending? throughthey chain fa-n'df the line' of cutting travel, oit' guiding mechanismfor sai'di chfain Y along ay path parallel to said planeiof-driv'e andspaced therefrom on one side off 9,5- chain, said chain embodyingsideflifnks and?` an intermediate link. having. a tooly socket extendingi substantially at' right angles f tof' the plane of drive',- saidichaiir also compris; ing parallel'spaced-apart VpivotalV connections?100 extending in the directionof feed atly right angles to the plane ofdrive andbe'tweentlife intermediate link and the'fside links', a@ cut'-ting bit inserted in' the socket s'aid interi-Iv `mediate link toextendfrom' the?A sid'e ofth'e 105 chain: opposite the guiding. mechanism inyposition to have a pathv ofv travel paralleli to'- the plane of driveand spaced: therefromg'a wedge member coperating ,withA the'y walls ofsaid socket to clamp said cutting; bit/,in' 1110 position and resilientmeans connected to said wedge to automatically replac'ei saii'dl wedgein locking lposition when released'.v

6. AIn a chain cutterxior mining manchi-11%,. the combination with achain link having: a- 1'15 tool socket thereinfo a cuttingqbit insertedkin lsaid socket, a wedge member coperating.- with the walls ofsaidsocket to clamp said cutting bit in: position, spaced apartv piv'- Votalbearings each substantial-lyparalleli toy 152'0 VtheV Ycombinationwith'a cha'i'n` embodying: M5

flat side links and an intermediate" cutter*` holder link having atransverse socketrelaI` `V tively toV said tlat side links,"pivot" pinseX- teiiding through holes :in the end poi-tions of, said sidelinksafndthroughend portions:v 1590-. 5

i operating position.

of said intermediate link also transversely of said intermediate linkand said side links, means for holding said pivot pins in position, acutting-bit having a shank extending into said socket in substantialparallelisinl with Vsaid pivot pins, and means for lautomaticallyclamping said cutting .bit in 8. In a chain cutter for miningv machines,

the combination with a cutter holder linkA having a socket therein, of acutting tool ,having a shank extending into said socket, 'a' wedge insaid socket engaging said shank,

said wedge having an exteriorly extended portion, and aspring mounted onsaid cutter holder and connected to the extended said sockets and aycutting member extendingfrom one side of said chain for travel along apath parallel to said plane of drive and spaced therefrom, Wedges eachextendingitransversely of the plane of drive and eacli'- in position tohold one of said tools in v cutting Vposition during the lineal travelofV said chain, and yguiding mechanism for that side. of Athe chainopposite the side fromY which the, cutting end is projected, saidcnttingfmechanis'm extending along va path sublstantially parallel tothe plane of drive and spaced therefrom.

n10. A traveling chain cutter comprising a link having spaced-apartpivotal bearings substantially parallel to each other and .an

. intermediate socket substantially parallelto said bearings andsubstantially perpendicular t'o thel planeof drive, a cutting toolexteiidingintolsaid. socket fand having a cutting pathof travel .spacedfrom the plane ofdriveandsubstantially parallel thereto,

' av-member extending into saidsocketv to- 'i of the plane 'of drive,and a spring conleased: after insertingpsaid tool f' into said f,SOClGlij; i

getherf .with Ysaid toolto'hold thelatterin cutting position duringlineal travel of Ysaid tool and during they feed thereof in. thedirection of saidvpivotal bearings transversely neeted to-said member tomove Vthe same'to holding-position when said member Vis' revllf-AtravelingV chaincutter comprising valli-nk having aV socket.extendinginto the same transversely of tlie cha1'n,'pivotal'con'nections for the next adjacent links spaced apart on opposite sides ofsaid socket and extending transversely ofthe-chain, a cutting toolextending into said socket directly between said pivotal connections,device extending into said socket and engaging said tool, and a springacting on said device for holding the same against said tool duringlineal travel thereof.

12. A traveling chain comprising a link having a socket extending intothev same along the directionn of feed and transversely ofthe plane ofdrive of said chain, pivotal connections between said 'linkand saidAadjacent'links, said pivotal connections extending in the direction offeed and subf stantially at right angles to the plane of said sockettransversely of the plane of drive and Vbetween vsaid pivotalconnections and extending from one side of said chain. to'

cut during lineal travel of said chain along a path spaced from andparallel to said plane of drive, and a clutch embedded in said. linkback'of said tool relatively to the cutting travel thereof to preventwith'- drawalV of said tool during lineal cutting travel thereof butsaid clutch having an 13.. A traveling chain comprising a chain Y link.having a socket extending.,transversely of the chain, a cutting toolcapable of being freely insertedV directly Vinto* the socket insaid linkfrom the "outer side of saidchain without altering theVconnectionsbetween said tool holder and other parts of ysaid chain, andautomatic mechanism carrieddi rectly by said link and extending`transversely thereof in positionto coperate with drive and spaced apartonopposite sides of said socket, aV cutting tool extending intoV suchsocket to permit free insertion' ofsaid on to automatically hold saidlookin-gde;-

vice in locking ,v position to prevent withdrawal ofsaidrciittingtoolduring operation Y thereof. i Y. 'j g 111 15. In achain cutter formining machines, the combination with a chain having spacedlapartfflatlinksV in l.parallel planes .and in parallelis'mwith the'vplane of Vdrive between them, saidj chain also having Van interinev`diatef' link 1with -atoolf'socket extending .lio

izo

therein in; Vthe Vdirection'offeed' of? said 1 chain and transverselyTof the planey of drive, c a pair of pivot pins extending transversely ito 'end portions ofgsaid intermediate link leov and end portions of saidside links, means for holding said pivot pins in position for relativepivotal movement between said intermediate link and said side links,said side links having a lineal travel in their own planes, a cuttingtool extending into said transverse socket transversely of the plane ofdrive and extending from such socket in position for a cutting path oftravel spaced from the plane of drive and parallel thereto, a wedge insaid socket for engaging said cutting tool to hold the latter in saidsocket during lineal cutting travel of the chain and the feed of thelatter in the direction of said pivot pins, a guide frame, andinterlocking mechanism between said guide frame and that side of thechain opposite the side from which the cutting tool projects for guidingthe chain along saidl frame but preventing it from moving away therefromwhen said guide frame is vwlthdrawn from the kerf produced by saidcutter.

16. In a chain cutter for mining machines,

the combination with a link having a tool socket extending` transverselythereof and transversely of the plane of drive of the chain cutter, of acutting tool extending into said socket and extending from one side ofsaid chain for a path of cuttii'ig travel parallel to said plane ofdrive and spaced therefrom, a key located in said socket to engage saidtool and projectin' from said socket on the same side of said chain fromwhich said cutting tool projects, and a spring carried directly by saidlink and connected to said key for yieldinoly holding the latter againstsaid tool to lock the latter in position during the cutting travelthereof but permitting free and quick removal of said tool when said keyis released by striking it a blow on that portion projecting from saidsocket.

17. In a chain cutter for mining machines, the combination with a linkhaving a socket, of a tool having a shank extending.` into said socket,a wedge-shaped key iny said socket engaging said shank, and yieldingmeans exteriorly of said link for holding said kev against said shank tolock the cutting tool in said socket during cutting operation therebybut permitting free removal of said cutting tool when said key is re-Vleased.

18. In a chain cutter for mining machines, the combination with a linkhaving a socket extending in the direction of feed and transversely tothe plane of drive, of a cutting tool having a shank embedded in saidsocket', means for limiting the extent of movement of the shank intosaid socket to hold the cutting member of said tool inposition for apath of cuttin travel spaced a predetermined distance rom the plane ofdrive, a key embedded in said socket extending along one edge of saidshank back of the tool relatively to its lineal cutting travel andprojecting from said socket in position to rectly in said link andprojecting from said socket back of the cutting tool relatively to itscutting path of travel, and yielding means for holding said key againstsaid tool to lock the latter in cutting position,

:the exposed end of said key being adapted to be struck against theaction of said yielding means to release saidv tool from its socket topermit quick withdrawal and the quick insertion of another tool.

20. In a chain cutter for mining machines, the combination with a link,of a tool having a shank mounted in a socket extending directly into thelink itself, a key in the link itself extending approximatelylongitudinally of said shank, and means urging said key against saidtool to lock the same in cutting position, said key being exteriorlyextendedl and adapted to receive a hammer blow to quickly release saidtool for withdrawal from said socket, thereby permitting quickreplacement of the withdrawnV tool by another tool, such replacementbeing effected against the action of such urging means and the latteracting automatically to lock the new tool in position.

21. In' a chain cutter for mining machines, the combination with a chaincomprising a plurality of socket links, of guiding mechanism associatedwith one edge of said chain, cutting tools mounted in said vsocket linkswith their shanks inthe plane of travel of said chain but extendingtransversely thereof, keys extending longitudinally of said Shanks, andyielding means exteriorly of said chain for holding said keys againstsaid Shanks.

22. In a chain cutter for mining machines, the-combination with a socketlink, of a cutting tool having a shank mounted in said socket' link, anda` self-acting clamp associated with said shank and extendinglongitudinallythereto and back thereof relatively to the lineal cuttingtravel of said cutting tool to lock the latter rigidly in positionrelatively to said link.

28. In; a chain-cutter for mining machines,

traveling cutter having a shank extending gripping' clamp mounted insaidsocket link lthe combination with a socket link, of a back of saidcutter relatively to the cutting i 24, In a chain cutter for miningmachines,

the combination with a link having a tool socket extending transverselythereof directly between the pivotal end portions of said link, of acutting tool mounted directly in said socket to extend transversely ofsaid link between the pivotal portions thereof, and means 'comprising ayieldingly mounted clamping member extending transversely of said linkbetween the pivotal portions thereof in position to permit free andquick insertion from the exterior of the link of: said cutting tool butgripping said tool upon attempted Withdrawal of said tool from saidsocket, and an exterior extension on said member adapted to receive ahammer bloiv to release said tool from its socket to permit quickWithdrawal thereof.

25. In a chain cutter for mining machines, the combination With a linkhaving a cutting tool socket extending entirely through said link andtransversely to the plane of drive of the chain cutter, of a cuttingtool having a shank embeddedin said socket and a cutting memberextending into position for a cutting path of travel spaced from saidplane-of drive, and means also embedded in said socket back of saidshank relatively to the cutting path of travel of said cutting tool forholding the tool in cutting position and taking the direct thrust ofsaid tool during its cutting operation, said means extending from saidsocket longitudinally of said cutting tool in position for receiving ahammerblovv to release the same quickly, the embedded portions of saidcutting tool and said holding means being entirely inclosed.

26. In a chain cutter for mining machines,

Y the combination With a chain comprising a tool socket link, ofacutting tool extending directly into the socket of said link, clampingmechanism extending along the said tool in the link itself for holdingsaid tool firmly in position to move bodily vvith said link Withoutmovement relatively thereto, and a shoe Ahaving a toe adapted to step ona part' of said chain While its heel engages said clampingmechanism forthe application of force longitudinally of said clamping mechanism torelease said clamping mechanism.

27. In a chain cutter for mining machines, the-combination With a linksocket member, of a cutting tool mounted therein, clamping mechanism forsaid cutting tool and comprising a member extending into said socket andan exterior projection, a hooked device having a heel engaging saidexterior proj ection, and a seat mounted on said chain to receive thehooked portion of said member.

28.. In a chain cutter for mining machines,

the combination with a plurality of alternate socket links and alternateintermediate links, of cutting` tools mounted in the socket links,yieldingly mounted Wedges in the socket links acting as clampingmechanism for said cutting tools, said Wedges having exteriorprojections, a seat mounted on an .versely thereof, yieldingly mountedWedges in' the, socket links acting as automatic clamping mechanism forsaid cutting tools, each of said Wedges having an exterior projection,seats, nuts on alternate bolts for holding said seats against the'corresponding outer intermediate links, nuts for holding the otherbolts in position, and a releasing shoe having a heel engaging saidexterior projection and a toe stepping on said seats.

30. In a chain cutter for mining machines, the combination of aplurality of side links and intermediate links, said intermediate linkshaving transverse sockets, cutting tools removably positioned in saidsockets, clamping devices positioned in saidintermediate links, andmeans exterior of said intermediate links for yieldingly urging saidclamp.- and devices toward said cutting tools in a directionapproximately longitudinally thereof.

31. In a cliain cutter for mining machines, the combination With a linkhaving a tool socket extending entirely through the same andtransversely thereof, of means for piv-A otallyV connecting said linkwith the next adjacent links on pivotal axes extending transversely ofsaid link, a cutting tool extending into said socket, a key in saidsocket and engaging said cutting tool, and a spring mounted on said linkexteriorly thereof for yieldingly holding said key against said tool ito lock the same in position during cutting operation but permittingfree removal of said tool when said key is released by a sufli cientendvvise pressure thereon. c

32. In a chain cutter for mining machines, the combination with a socketlink, of a cutting tool having va shank extending into said lsocket linktransversely thereof, said shank vhaving straight plane surfaces on. allfour sides, means forpivotingsaid socket linksl 'to next adjacent linkson axes extending transversely of ysaid socket link, and a selfactingclamp extending transversely of said socket link and acting on saidcuttingv tool;v

. tool.

.33. In a chain cutter formining machines, tliecombination with a linkhaving spacedapart perforations in itsy end ,portions for pivotedconnections -to the next adjacent links on parallel axes extendingtransversely of said link and in the direction of feed, said link havingva tool socket extending transversely of said link in said perforationsand having a forwardplane wall and spacedapart vside walls, a cuttingtool havinga shank with a straight plane forward .face to engage theVforward .wall of said socket, and straightplane side faces toengagexthe side walls of said socket, and means .ini said socket back ofsaid shank relative to the direction of -travelof the cutting tooltohold the cutting tool automatically in adjusted position after saidshank has beenv inserted into said socket partiallyor `fully to engagethe 4i'j'orward wall and side walls of p said socket.

34. In a chain cutter for mining machines, the combination with aAplurality lof tool socket links, of intermediate connecting links,ypivot rods extending ytransversely of said tool socket links and ofsaid intermediatelinks to pivotallyconnect said tool socket links tosaid intermediate links ion-axes extending transversely-ofv said toolsocket links, a guide frame, extensions fromrsaid pivot rods, mechanismon said guide frame to coact with said extensions to guide said linksover linear travel, cutting tools mounted in said socket links andextending'transversely thereof between said pivot rods, said cuttingtools extending into cutting position on the side of the links oppositethe guiding mechanism, wedges in said sockets approximately inparallelism with said pivot rods, and springs acting on said wedges forcontinually holding the same in locking positions.-

35. In a chain cutter for mining machines, the combination with a chaincomprising a link having spaced-apart parallel bearings extending in thedirection of feed of the cutter and intersecting the plane of drivethereof, of a cutting tool extending into a socket in said linktransversely of said plane of drive between said spaced-apart bearingsand projecting from said link in position for a cutting path of travelspaced from the plane of drive and substantially parallel thereto,automatic clamping mechanism carried by said link in position to permitquick insertion of said tool in said socket and prevent withdrawalthereof by locking said tool in rigid connection with said link, saidclamping mechanism being releasable from the outer side of said chain topermit withdrawal of said tool from such side and the substitutiontherefor of another tool, pivot pins extending through said spaced-apartbearings a,y uide frame followino' the chain cutter relatively to thefeeding direction thereof, Imechanism :between vsaid guide frame and`said pivotpins for rguiding the chain :to cause the cutting -tooltodescribe its aforesaid path `of travel and lock said chain againstYmovement from :said guide frame in fthe .direction of feed of saidguide frame in the .opposite direction from said chain,andmechanism forAholding saidipivot pins inixed relation to said guide frame v.in theplane thereof and .projecting .in the -Vdirection .of feed to confinethe kmovement of the cutter to a lineal path,

436. 'In a'chain cutter for miningmachines,`

the combination with a plurality of pairs of lside links and having atoolsocket extending transversely thereof and -transversely of the planeof drive,clampingmechanisin on lsaid intermediate link for 'holding saidtool rigidly in position relatively-to said Aintermediate link Vforbodily travel therewith, spaced-apart pivot pins extendingthrough saidpairs of links and through the end portions-of saidintermediate `link infeeding direction substantially atright angles lto the plane of-drive,means forpreventing `the turning of said pivot pins relatively tol theinner side links, a supporting frame for the chain and movable bodilytherewith in feeding direction, and mechanismv between said supportingframe and vthe inner ends of said pivot pins for guiding said chain tocause the cutting tool to have a path of travel spaced from the plane ofdrive and parallel thereof while confining the cutting tool to such pathof travel by preventing tilting of said chain transversely to said frameand relatively thereto.

37. In achain cutter for mining machines, the combination with aV chaincomprising two pairs of spaced-apart side links, of an intermediatesocket link, pivotal connections between the respective pairs of sidelinks and the end portions of said intermediate link, a tool extendinginto the socket of said intermediate link transversely of the plane ofdrive and projecting from said intermediate link into position for apath of travel spaced from said plane of drive and parallel thereto,clamping mechanism extending into the socket of said intermediate linkback of the cutting tool for holding the latter rigidly in positionrelatively to said intermediate link, said clamping mechanism extendingoutwardly and being releasable exteriorly to permit quick replacement ofthe cutting tool by another, a supporting frame, and mechanism betweensaid pivotal connections and said supporting frame for guiding saidcutting tool along such path of travel and confining said tool to suchpath of travel by preventing movement thereof sol transversely off suchpath of travel, said mechanism between said vpivotal connections andsaid supporting frame guiding the chain along the forward portion ofvsaid framein a direction transverse of the feeding direction and holdingsaid chain in alinenient with said f'rame.v

38. In a chain cutter for mining machines, the combination with a chaincomprising a plurality of pairs of side links, of an intermediate socketlink, pivotal connections between the side links and socket links, acutf frame for preventing tilting' of said rchainV relatively to saidvframe and also preventing movement of said chain away from `said frameto conine the path of movement of said cutter to a lineal path spacedfrom the plane of drive at right angles to said pivotal connectionsv andparallel to such plane of drive and the forward endy of' said frame.

39. In a chain cutter for mininginachines,

the combination with sideslinks 'and an inter-V mediate socket link,ofpivotal connections between said side links and said 'intermedi-V Yate socket link extending in vfeeding direction at right angles to theplane of drive, a tool extending into the socket of the inter-y mediatelinktransversely to the plane ofV drive and between said pivotalconnections, clamping mechanism extending into the socket of theintermediate linkin positionV for'releasably holding said cutting toolrigidly in connection with said socket link, a

ygr'ooved supporting frame extending back from the chain along the lineof said pivotal connections, 'and mechanism` between the inner side ofthe chain and said frame and comprising members extending from saidpivotal connections mto the groot/edv frame for preventing tilting ofthevchain relatively to said Vframe while guiding the chain along saidframe to cause said cutterv tohave a path'of travel conformingto the'contour of the forwardedge of said frame and in alinement therewith inthe direction of feed. r

In testimony whereofl I have signed my name to this specification, inthe presence of two subscribing witnesses, on this'Qd da of September,A.'D. 1914./

` EDMUND C. MORGAN.

IVitnesses: f

' `,CiaiARLns II. SMM, Y `v EDGAR FRANCIS BEAUBIEN.

